Bulletin #1205, Bloat Nematode in Maine Garlic (PDF) By Steven B. Johnson, Extension Crops Specialist, University of Maine, and David Fuller, Extension Professional, University of Maine For information about UMaine Extension programs and resources, visit extension.umaine.edu. Find more of our publications and books at extension.umaine.edu/publications/. The stem and bulb, or “bloat,” nematode (Ditylenchus dipsaci) is